If a king sent an ambassador to another country to negotiate with another king in behalf of the king who sent him, then the ambassador’s word was as valid as if the king who sent him were physically present and speaking. The ambassador was the word of the king made flesh, or, said differently, the incarnate word of the king. Within the limits of his assignment, the ambassador was legally the king, and when the ambassador was present, the king was legally present.
George Wesley Buchanan Jesus without Fabrication (Lexington, KY: Emeth Press, 2009), pp. 19-20.
Theological NoteBook 